Film legend Welles (5)
I believe the answer is:
orson
'film legend welles' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for orson that I've seen before include "- - Welles (actor)" , "Film director so-called" , "-- Welles, director/actor" , ". . . . . Welles, creator of film ''Citizen Kane''" , "_____ Welles, director and star of "Citizen Kane"" .)